Question

how to solve x, for both questions please?

Answer 1

for the first one,
294 + 30 + x- 37 = 360
add like terms
287 + x = 360
subtract 287 from both sides
x = 73

for the second one
4x +3 = 63
subtract 3 from both sides
4x = 60
divide both sides by 4
x = 15